Cyclone III development board SRAM revision D & E differences

When I ported a project that used SRAM from one board to another, I found that I needed to look at the timing requirements in the data sheet for the new boards SRAM chip. I made changes to the code to accommodate the longer traces on the new board and was able to get the project working again. Note that this may have nothing to do with your board.

I'd suggest looking at demo projects made for the old and new versions of your board and compare them with beyond compare or a similar tool. You may find that the vendor has updated the demos to work with the different chip. If that is the case try making similar changes to your code.